Madame Hydra, also known as Viper, crept through the shadows, her eyes fixed on her target: Black Widow. The two women were enemies, and Madame Hydra was determined to take out Black Widow once and for all. As Black Widow turned a corner, Madame Hydra pounced, leaping out from the shadows and pressing a cloth soaked in chloroform to Black Widow's face. Black Widow struggled briefly, but the powerful sedative quickly took effect, and she collapsed unconscious in Madame Hydra's arms.